fix(pipelines): clear today's real cron errors + kill monitoring false alarms

Real errors fixed (all verified by manual run):
- price_monitor.py: shares None -> TypeError at L584 (now completes 3m7s,
  full 39-stock reassess + zone triggers + Dad push)
- market_insight.py: net_inflow None -> TypeError at L142 (now 0.3s, 5 insights)
- promote_candidates.py: add busy_timeout=30s (DB lock under concurrent writes)
- premarket_full_review.py: 12-dim analysis now detached background launch
  (was doomed by cron 120s script timeout no matter what)

Systemic:
- HERMES_CRON_SCRIPT_TIMEOUT=600 drop-in for both gateway services
  (fixes mofin_health SIGTERM, market_watch timeout, memory_guardian timeout)
- sync_profile_scripts.sh: re-hardlink deploy->profile scripts after every
  deploy (scp replaces files = new inode = broken hardlink = cron silently
  runs stale code; this caused promote to keep failing after my first fix)

Monitoring false-alarm fixes (the '花瓶' problem):
- mofin_health.py: legacy JSONs that migrated to DB (multi_tf_cache/
  macro_context/market/live_prices/price_history/macro_risk_state) no longer
  warn 'no readers'; marked as migrated
- NEW db_freshness section: real pipeline health from DB tables
  (mtf_cache 0.4h / macro_context_log 2h / market_snapshots 2h /
  live_prices 0.4h / price_events.json 0.4h — ALL HEALTHY)
- price_events freshness reads live JSON store (DB table is legacy)
- market.json placeholder created (13+ scripts have fallback paths)

Investigation notes: wiki-self-growth 03:04 key1 429 predates full key6
activation on default gateway; current 8642 verified on key6 and working.
Weekend 'Blocked' jobs verified fixed (vacuum_state_db passes).

scripts/notify_user.py

@@ -0,0 +1,24 @@
+import json, urllib.request
+
+msg = """[笑笑] 12维分析管道已系统化完成 ✅
+
+你早上指出的缺口（盘前重评只有技术参数、12维LLM分析为空/陈旧）已从系统层面修复，不是手动缝补：
+
+1️⃣ 盘前管道改造：每交易日 08:10 自动跑持仓12维分析（batch_reassess --type holding --today，每日强制刷新14只）
+2️⃣ batch_reassess 升级：持仓/自选全覆盖、分析超20h自动重评、现金/总资产改从 portfolio_summary 实时读（之前硬编码的是几周前的旧值）、港股前缀修复
+3️⃣ 自选补全：新增每日12:30 cron「自选12维分析补全」，109只缺分析的自选股每日自动补
+4️⃣ 验证：300308 已生成1920字12维分析（观望）写入DB；此刻后台正在跑14只持仓全量补评
+
+代码已提交并同步到246 repo（merge 4dcfee81）。
+已通过 kanban 通知知微（t_2ff55641），让她验证今日开盘简报和12:30自选任务。
+
+另外凌晨的自愈巡检还修了：promote候选崩溃、DB锁、符号链接阻断、candidate_filter等问题，今天开盘应该全部正常。"""
+
+payload = json.dumps({"to": "hmo@yoin.fun", "body": msg, "type": "chat"}).encode()
+req = urllib.request.Request("http://127.0.0.1:5805/", data=payload,
+                             headers={"Content-Type": "application/json"})
+try:
+    resp = urllib.request.urlopen(req, timeout=10)
+    print("XMPP sent:", resp.read().decode()[:100])
+except Exception as e:
+    print("XMPP fail:", e)